In Chicago, there isn't may stores who double coupons, but Kmat will double coupons December 5th - 7th.
They are offering double coupons up to $2 in value and there is a limit of 5 total coupons they will double.
They also require you to have a Shop Your Way Rewards card which is free. BUT the sneaky part is you need to spend $25 pre-coupon. So if you can only double (5) $2 coupons, that means you will pay at least $5 out of pocket plus tax.
Here are a few tips if you are new to Kmart Doubles:*These promotions are not well communicated to store level. If you decide to brave the store, you might take the number to Kmart customer service with you just in case you run into any problems: 866.Kmart4U.
*They do not offer any overage on merchandise. If you find an item for $3.88 and have a $2 coupon, your total will be just the tax. They will not give you .12 in overage.
*Kmart tends to carry low levels of inventory. If there is something you really want, I would suggest shopping early.